Mold treating mechanism for grid casting machine



Feb. 2, 1932. A. D. LUND 3 x MOLD'TREATING MECHANISM FOR GRID CASTING MACHINES Original Filed Aug. 24. 1928 I I 1 l /2 m I I ./6, |l 3 l J L INVENTOR. /3 ART/4UP? Q. LL/ND ATTORNEY Patented Feb. 2.1932

UNITED STATES PATENT OFFICE.

Ali-mun. p. Ltmn, or unmwoms, mmmso'ra, Assmx'on 'r'o ALcn'r nLncrno-rnon Uc'rs ooaromrion, or new roan, n. Y, A oonronrrou or nmwann item) ramrme IEGHANISI roaoa' n GASZLING Original application flled Magnet 24, 1928 Serial No. 801,880. Divided and this application filed Auzaat l7,

1920. Serial 30. 886,554.

This invention relates to mold treating mechanisms for casting machines, and the primary object is to provide an eflicient, practical, and comparatively sim le device for coating the mold faces so that t e casting metal will not adhere thereto. More specifi call the object is to provide a transversely shi table burner unit that is carried on a track or rail, for manual manipulation, and

i which is so designed that it can quickly and properly. be moved through between the mold faces, while the molds are open and after they have discharged a previously made casting. Thejpresent application is a division of my co-pending application, Ser. No.'301,830, filed August 24, 1928, for grid casting machine,

and reference is made to thatapphcati on for a more complete understanding of the appli- I cation of the treating mechanism to the casting machine as a whole.

n the accompanying drawings:

Fig. 1 is a plan or top view of the mold treating mechanism, fractional portions being broken away.

Fig. 2 is an end elevation of the device, partly in section, as on the line 22 in Fig. 1.

Fig. 3 is a detail section, as on the line 33 in Fig. 1, but showing the burner carriage as 30 shifted to and locked in its idle position.

Referring to the drawings more particularly and by reference characters, A and B designate a pair of separable casting molds. The mountings and actuating mechanisms for these molds are omitted, as they form no part of the present invention and are fully disclosed in the above mentioned application, Ser. No. 301,830, it being sufiicient to state that the molds are brought together .when to receive the molten metal and are separated to discharge the finished castings. Before the molds are again closed, to receive metal for the next casting to be formed, the treating process is applied, although it may be explained that in some instances the treatment need only be applied once for two or several casting operations.

Thenumeral 4 designates a rectangular frame that is suitably secured to some rigid part of the machine near the molds A and B.

8 each time the valve 10is opened.

Upon the vertical end bars of the frame 4. I mount two bracket arms 5 which support a transversely extending guide'bar or track 6. Upon thisbar is slidably mounted a casting 7 through which extends and from which depends a burner tube 8 having two opposite rows of burner tips 9. The pipe or .tube 8 has a valve 10, and connects with a flexible hose 11 that supplies gas to the burner 8 when the valve 10 is open. A pilot tube 12 connects with the gas supply, in advance. of the valve 10, and has a burner tip 13, adjacent the lower end of the burner ipe 8, which, when oncelit, will light the urner When the lower burner tips 9 are thus ignited the flame in mediately passes or runs up the pipe, lighting the other tips. The valve 10 is opened and closed by turning a hand rod 14, plvotally secured to the bore extension bolt 15 of the valve. Thebolt 15 is-further provided with a fin er 16, adapted to drop or swing into a note 17, in thebar 6, when the carrier 7 is in the left hand osition indicated by dotted lines in Fig.1. en the finger 16 is in the notch 17113116 valve 10 is closed andthere is no gas flowing to the burner 8. In any other position of the finger 16, however, the gas su ply to the burner is open.

and the latter is 1gnited.

During the interval of time in which the molds are open, an attendant, stationed at the right side of the machine, grasps, turns, and pulls the handle bar 14, thus opening the valve 10, lighting the burner 8, releasing the finger 16 of the carrier, and draws the burner 8 entirely-through or across both sets of molds, causing the flames at the burner ti s 9 to thoroughly and evenly treat or smo e all of the matrix surfaces. He repeats this treatment by pushing the carrier back to its original position.

The construction thus described not only serves'to economize on the gas consumption, as it is a simple matter for the operator to turn the rod 14 which he already holds in his hand when a smoking operation is completed; but also serves as a warning signal to prevent damage that would be caused if the burner were clamped between the molds, I

I because if the-operator has not pushed the carriage far enough over to permit the finger 16 to engage the notch .17, he cannot shut ofi the flame, and consequently knows that the carriage has not been moved far enough so that the burner 8 will engage the closing molds.

It is understood that suitable modifications may be made in the structure asdis'closed, provided such modifications come within the spirit and scope of the appended claims.

Having now therefore fully illustrated and described my invention what I claim to be new and desire to protect by Letters Patent 1s:

1. In a casting machine having a pair of separable molds, a carriage movable longitudinally with respect to the faces of the molds, a burner and ilot. mounted on the carriage, a valve for t e burner, and means, operative to prevent closing of the valve except when the carriage is in a predetermined position.

2. In a casting machine having ,a-pair of separable molds, a .burner normally'resting in an idle position adjacent theends of the molds, means for guiding-the burner centrally through between the moldswhen the latter are separated, and means for moving the burner between the molds, said means including a burner valve controlling device.

3. In a casting machine-having a pair of separable molds a burner normal disposed a burner and valve therefor carried by the carriage, and means operative to prevent closing of the valve except when the carria e is in a predetermined sition on the trac 8. A mold treating evice for casting machines comprising a track, a carriage mounted upon' the track for guidin action thereon, a burner carried by the carr1age,-a valve for the burner, means for controlling the valve, and means operative to prevent closing of the valve except when the carriage is in a predetermined position on the track.

9. A mold treating device for casting machines comprising a track a carriage'mounted upon the track for guiding action thereon, a burner and valve therefor. carried by the carriage, a closer for the valve, said track having a notch at a predetermined position therein, and saidvalve closer having a lug for engagement in the notch to permit closing of the valve.

10. A mold treating device for casting machines, comprising a transversely movable carriae, a burner unit and a valve therefor carrie by'the carriage, and aananually operative control member for opening and closing the valve and moving the carriage.

Signed at Minneapolis, in the county: of Hennepimand State ofMinnesota, this 15th day of August 1929.

, ARTHUR D. LUND.

in an idle position adjacent the ends of the molds, means for guiding the burner throughbetween the molds when the latter are separated, and a handle pivotally connected to the burner for manually actuating it between the molds.

4. In a casting machine havin a pair of separable molds, a burner norma y disposed in an idle position adjacent the ends of the molds, means for guiding the burner through between the molds when the latter are separated, a valve for the burner, and an actuator element for moving the burner and controlling the valve.

5. Ina casting machine having a pair of separable molds a burner normally disposed in an idle positlon adjacent the ends of the molds, means for guiding the burner through between the molds when the latter are separated, a valvefor the burner, and an actuator element for moving the burner and con- .trolling the valve, said actuator element comprising a handle member'pivotally connected to the burner.

6. A mold treating device for casting machines comprising a track, a carriage mounted upon the track for guiding action thereon, and a burner and burner valve carried by the carriage.-

7. A mold treating device for casting machines comprising a track, a carriage mounted upon the track for guiding action thereon, 

